--------------- step 1 --------------------------------------
removed _samples directory
--------------- step 2 --------------------------------------
making functions init() and jsEncode Public
(used in felamimail/inc/class.uicompose.inc.php to initalize the ckeditor in any case (plaintext/html))
see patch below:

Index: phpgwapi/js/ckeditor3/ckeditor_php5.php
===================================================================
--- phpgwapi/js/ckeditor3/ckeditor_php5.php	(Revision 30397)
+++ phpgwapi/js/ckeditor3/ckeditor_php5.php	(Arbeitskopie)
@@ -431,7 +431,7 @@
 	/**
 	 * Initializes CKEditor (executed only once).
 	 */
-	private function init()
+	public function init()
 	{
 		static $initComplete;
 		$out = "";
@@ -522,7 +522,7 @@
 	 * @param mixed $val
 	 * @return string
 	 */
-	private function jsEncode($val)
+	public function jsEncode($val)
 	{
 		if (is_null($val)) {
 			return 'null';

--------------- step 3 --------------------------------------
-added aspell as plugin, as it is not available by default anymore.
 phpgwapi/js/ckeditor3/plugins/aspell
-changed phpgwapi/js/ckeditor3/plugins/aspell/spellerpages/server-scripts/spellchecker.php
 to allow only configured aspell, tmp dirs and language settings
-removed other than php spellchecker pages from phpgwapi/js/ckeditor3/plugins/aspell/spellerpages/server-scripts/
-added toolbar options to reflect the use/change of calls of SpellCheck(er) via toolbar button
--------------- step 4 --------------------------------------
-changed BulletList to BulletedList in ckeditor.egwconfig.js